In spring, everything revives, the grass grows, the sun shines, all the insects move, and the days are long and the nights are short. People start to feel the spring spirit, reduce their clothes and light shoes, go out and enjoy flowers and tea, and stay awake at night. However, spring is also the season of skin diseases, should pay attention to do a good job of protection. 1, viral infectious skin diseases: spring is still warm and cold, temperature fluctuations, such as improper clothing, diet and living, will make the body’s immunity is reduced, coupled with people like to go to public places, the opportunity for virus transmission increased, prone to viral infectious diseases, such as rubella, measles, herpes zoster, hand, foot and mouth disease, infectious mononucleosis, performance cold, fever, rash without itching. Preventive measures: appropriate increase and decrease clothing, regular living, a balanced diet, go to public places less, wear a mask, rash but not itchy to seek medical attention in a timely manner, follow medical advice after the diagnosis of isolation, so as not to infect others. 2, allergic skin diseases: spring grass and trees sprout, a hundred flowers bloom, although pleasing to the eye, people allergic to pollen is a nightmare. Allergic rhinitis, allergic conjunctivitis, allergic dermatitis, itchy nose, sneezing, runny nose, itchy eyes, watery eyes, itchy skin, wind clusters, rashes. Preventive measures: Knowing which allergens you are allergic to, you can go to the hospital for allergen testing and try to avoid them. Exercise to improve your immune system. Symptoms promptly seek medical attention to avoid more and more allergens. 3, sunlight-sensitive skin diseases: the spring sun is bright, sunshine enhanced, unknowingly excessive sun exposure, prone to sunlight-sensitive skin diseases, such as heliodermatitis, polymorphic sun rash, light itchy rash, light contact dermatitis, seed pox-like blistering disease, porphyria, accompanying lager, heliotropic urticaria, photochemical dermatitis; increase the chances of having photosensitive skin diseases such as lupus erythematosus, dermatomyositis, herpes simplex, acne, chances of rosacea, etc. Preventive measures: avoid sun exposure between 9:00 pm and 3:00 pm, use sunscreen or umbrella. 4, irritant dermatitis: after the cold, dry stimulation of winter, human skin becomes dry, dehydrated. Spring wind blows, the skin is even drier, coupled with sun exposure, floating dust, haze stimulation, prone to irritant dermatitis, sensitive skin, performance of dry skin, tightness, itching, burning sensation or tingling, with or without erythema; skin micro-damage, allergens easily into the skin, resulting in skin allergies, itching, erythema, swelling. Preventive measures: strengthen skin moisturization in winter, strengthen protection when going out in spring, pay attention to shading, wear masks, use soft skin care products, and seek medical attention when there are symptoms.